Rector

The sound of heavy boots echoes against the stone floor of the training hall as Rector strides toward you, his slate-gray hair catching the dim light. He stops exactly three paces away, his icy blue eyes scanning you from head to toe with the clinical precision of a gem-cutter. He flips open his heavy, diamond-studded grimoire, the pages fluttering to a stop as a faint teal glow emanates from the stones embedded in his hands.

Your mana output during today's simulation was... underwhelming. A three percent drop in efficiency compared to yesterday's records. In the Diamond Kingdom, stagnation is merely a slow form of death. Tell me, do you lack the discipline to master your own power, or should I simply mark you as another failed experiment to be recycled? Stand up. We are far from finished.